DE1522841C3 - Vorrichtung zum Ermitteln und Auf zeichnen der optischen Dichte einer Probe - Google Patents

Vorrichtung zum Ermitteln und Auf zeichnen der optischen Dichte einer Probe

Info

Publication number
DE1522841C3
DE1522841C3 DE1522841A DE1522841A DE1522841C3 DE 1522841 C3 DE1522841 C3 DE 1522841C3 DE 1522841 A DE1522841 A DE 1522841A DE 1522841 A DE1522841 A DE 1522841A DE 1522841 C3 DE1522841 C3 DE 1522841C3
Authority
DE
Germany
Prior art keywords
converter
frequency
sample
voltage
output signal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DE1522841A
Other languages
German (de)
English (en)
Other versions
DE1522841A1 (de
DE1522841B2 (de
Inventor
Gordon Webb Binghampton N.Y. Nichols (V.St.A.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GAF Corp
Original Assignee
GAF Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GAF Corp filed Critical GAF Corp
Publication of DE1522841A1 publication Critical patent/DE1522841A1/de
Publication of DE1522841B2 publication Critical patent/DE1522841B2/de
Application granted granted Critical
Publication of DE1522841C3 publication Critical patent/DE1522841C3/de
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • H03M1/60—Analogue/digital converters with intermediate conversion to frequency of pulses
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/27—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection ; circuits for computing concentration
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/59—Transmissivity
    • G01N21/5907—Densitometers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/86—Investigating moving sheets

Landscapes

  • Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Chemical & Material Sciences (AREA)
  • Pathology (AREA)
  • General Physics & Mathematics (AREA)
  • Biochemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Theoretical Computer Science (AREA)
  • Engineering & Computer Science (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Mathematical Physics (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
  • Radiation-Therapy Devices (AREA)
DE1522841A 1966-02-18 1967-02-15 Vorrichtung zum Ermitteln und Auf zeichnen der optischen Dichte einer Probe Expired DE1522841C3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US52854666A 1966-02-18 1966-02-18

Publications (3)

Publication Number Publication Date
DE1522841A1 DE1522841A1 (de) 1969-12-04
DE1522841B2 DE1522841B2 (de) 1973-05-17
DE1522841C3 true DE1522841C3 (de) 1973-11-29

Family

ID=24106124

Family Applications (2)

Application Number Title Priority Date Filing Date
DE1522841A Expired DE1522841C3 (de) 1966-02-18 1967-02-15 Vorrichtung zum Ermitteln und Auf zeichnen der optischen Dichte einer Probe
DEG36456U Expired DE1958408U (de) 1966-02-18 1967-02-15 Vorrichtung zur ermittlung einer die optische dichte einer probe kennzeichnenden kenngroesse.

Family Applications After (1)

Application Number Title Priority Date Filing Date
DEG36456U Expired DE1958408U (de) 1966-02-18 1967-02-15 Vorrichtung zur ermittlung einer die optische dichte einer probe kennzeichnenden kenngroesse.

Country Status (8)

Country Link
US (1) US3471242A (ru)
BE (1) BE694269A (ru)
CH (1) CH479065A (ru)
DE (2) DE1522841C3 (ru)
ES (1) ES336895A1 (ru)
FR (2) FR1511926A (ru)
GB (1) GB1158409A (ru)
NL (1) NL6702384A (ru)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3572944A (en) * 1969-02-24 1971-03-30 Film Equipment Manufacturing C System for analyzing color samples
FR2055891A5 (ru) * 1969-08-05 1971-05-14 Anvar
US3748044A (en) * 1969-09-02 1973-07-24 Abbott Lab Digital chemical analysis apparatus
SE344637B (ru) * 1970-11-02 1972-04-24 V Klimecki
US3744905A (en) * 1971-06-24 1973-07-10 Gte Sylvania Inc Apparatus for measuring and marking aperture masks
US4412744A (en) * 1981-06-01 1983-11-01 E. I. Du Pont De Nemours & Co. Absolute spectrophotometer
US5029312A (en) * 1990-02-08 1991-07-02 Lifetouch National School Studios Inc. Automatic portraiture printer control system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3069013A (en) * 1960-05-18 1962-12-18 Gardner Lab Inc Photoelectric inspection system
US3367230A (en) * 1963-12-04 1968-02-06 Welch Scient Company Light density scanning device

Also Published As

Publication number Publication date
DE1958408U (de) 1967-04-06
ES336895A1 (es) 1968-06-01
NL6702384A (ru) 1967-08-21
FR1512651A (fr) 1968-02-09
GB1158409A (en) 1969-07-16
DE1522841A1 (de) 1969-12-04
BE694269A (ru) 1967-07-31
CH479065A (de) 1969-09-30
FR1511926A (fr) 1968-02-02
DE1522841B2 (de) 1973-05-17
US3471242A (en) 1969-10-07

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Legal Events

Date Code Title Description
C3 Grant after two publication steps (3rd publication)